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Texture mapping of volcanic lava flows based on zero-crossing information from GSF filtering and a local feature statistics operator

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<mark>Journal publication date</mark>15/10/1993
<mark>Journal</mark>Proceedings of SPIE - The International Society for Optical Engineering
Number of pages8
Pages (from-to)58-65
Publication StatusPublished
<mark>Original language</mark>English
EventState-of-the-Art Mapping 1993 - Orlando, United States
Duration: 11/04/199316/04/1993


ConferenceState-of-the-Art Mapping 1993
Country/TerritoryUnited States


The information contained in the slopes and locations of zero-crossing points for band-limited images of the Lonquimay complex allows mapping of texture features. The band limited images are derived and processed in two different ways: GSF filtering leads to maps of zero-crossing density, which is associated with response to periodic structure, and a spatial filtering approach based on local feature statistics yields maps of surface roughness. The sources of these textural properties, particularly surface ridges and folds, are related to the physical characteristics and history of the lava flows and are also influenced by the underlying surface topograhy.

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